From the sum of x2-2xy+y2 and x-2xy+y2 subtract x2-4xy+4y2 – InterviewSolution

1.

From the sum of x2-2xy+y2 and x-2xy+y2 subtract x2-4xy+4y2

Answer»

x2-2xy+y2+x-2xy+y2

=x2-4xy+2y2+x

=X2+2y2-4xy+x

X2+2y2-4xy+x - (x2-4xy+4y2)

=x2+2y2-4xy+x-x2+4xy-4y2

•+4xy and -4xy will be cancelled

•x2 and -x2 will be cancelled

=2y2+x-4y2

-2y2+x

Step-by-step EXPLANATION:

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